vajaho collection
Hungary, 3000 forint, 2002, Ag, Bolyai János, 1802-2002, 200th Anniversary of the famous Hungarian Mathematician (multidimensional geometry)
Hungary, 3000 forint, 2002, Ag, Bolyai János, 1802-2002, 200th Anniversary of the famous Hungarian Mathematician (multidimensional geometry)
Europe
Hungary
2002